(c)  
Open this circuit breaker on the main power distribution panel P6 and attach a DO-NOT-CLOSE tag: 1) 6L24, TAT PROBE HEAT

 (d)  
Make sure the TAT annunciator is on.

 (e)  
Remove the DO-NOT-CLOSE tag and close this circuit breaker on the P6 panel: 1) 6L24, TAT PROBE HEAT

 S 865-010
 (2)  Release the WING ANTI-ICE WINDOW/PROBE HEAT test switch.
 S 045-010
 WARNING: DO THE DEACTIVATION PROCEDURE FOR THE SPOILERS OR MOVE ALL
_______ PERSONS AND EQUIPMENT AWAY FROM THE SPOILERS DURING THIS PROCEDURE. THE SPOILERS CAN RETRACT QUICKLY AND CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (3)  Do the deactivation procedure for the spoilers (Ref 27-61-00/201), or move all persons and equipment away from the spoilers during this procedure.
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 30-33-00
 ALL  ú ú 01 Page 502 ú Jun 20/92

A

757
MAINTENANCE MANUAL

 S 045-011
 WARNING: PREPARE THE SAFETY-SENSITIVE SYSTEMS FOR THE AIR MODE BEFORE
_______ YOU OPEN THE AIR/GROUND CIRCUIT BREAKERS. IN THE AIR MODE, MANY OF THE AIRPLANE SYSTEMS CAN OPERATE AND CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (4)  
Prepare the safety-sensitive systems for air mode simulation (Ref 32-09-02/201).

 S 865-020

 (5)  
Open these circuit breakers on the overhead panel, P11, and attach DO-NOT-CLOSE tags:

 (a)  
11C19, LANDING GEAR POS SYS 2 ALTN

 (b)  
11S15, AIR/GND SYS 1

 (c)  
11S23, LANDING GEAR POS SYS 2

 S 215-012
 (6)  
Make sure the TAT annunciator is off.

 S 865-021

 (7)  
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P11 panel:

 (a)  
11C19, LANDING GEAR POS SYS 2 ALTN

 (b)  
11S15, AIR/GND SYS 1

 (c)  
11S23, LANDING GEAR POS SYS 2

 S 215-014
 (8)  
Connect a jumper between the test receptacle J1 on the Left Engine Speed Card M10298 (P50 Card File) and the airplane ground.

 (a)  Make sure the TAT annunciator is off.

 (9)  
Remove the jumper lead.

 S 805-016

 (10)
 Do the above three steps again for the Right Engine Speed Card M10311 (P50 Card File).

 S 805-015
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